Oval Cut
Brazilian Aquamarine 0.474ct Loose Stone
Sale price¥12,800
0.870ct loose purple spinel from Madagascar
Sale price¥14,800
Vietnam Aquamarine 0.586ct Loose
Sale price¥12,800
Synthetic Alexandrite 0.560ct loose stone
Sale price¥14,800
American Benitoite 0.167ct loose stone
Sale price¥59,800
Brazilian Green Tourmaline 0.561ct Loose Stone
Sale price¥25,800
Brazilian unheated pink imperial topaz (sherry pink) 0.231ct loose stone
Sale price¥18,800
Tanzanite from Tanzania 0.520ct loose stone
Sale price¥12,800
Zimbabwe bicolor euclase 0.081ct loose stone
Sale price¥39,800
Bicolor Sapphire 5.640ct Loose Stone with Certificate
Sale price¥98,000
Sri Lankan saffron 0.121ct loose stone
Sale price¥18,800
Brazilian Santa Maria Aquamarine 0.968ct loose stone
Sale price¥69,800
Sri Lankan zircon 3.614ct loose stone
Sale price¥29,800
Afghanistan Lazurite in Sodalite 2.387ct Loose Stone
Sale price¥39,800
Brazilian Rubellite 2.439ct loose stone
Sale price¥69,800
Tanzanite 1.055ct loose stone
Sale price¥29,800
Tanzanite 1.458ct loose stone
Sale price¥39,800
Tanzanite Zoisite 0.435ct loose stone
Sale price¥12,800
Brazilian Alexandrite 0.097ct loose stone
Sale price¥18,800
Moloxite (Green Apatite) from Madagascar 4.087ct Loose Stone
Sale price¥39,800
Oregon Sunstone from the United States 1.930ct loose stone
Sale price¥18,800
Sri Lankan Violet Spinel 0.592ct Loose
Sale price¥8,800
Zimbabwe bicolor euclase 0.205ct loose stone
Sale price¥98,000
Spanish Andalusite 0.74ct loose stone
Sale price¥6,980
Mexican Fire Opal (Faceted Cut) 0.608ct Loose
Sale price¥12,800
Madagascar Blue Sapphire (Ice Blue) 0.694ct Loose
Sale price¥18,800
Cambodian colorless zircon 1.407ct loose stone
Sale price¥12,800
Cambodian colorless zircon 1.806ct loose stone
Sale price¥15,800
Oregon Sunstone from the United States 0.596ct loose stone
Sale price¥12,800
Tanzanian Violet Spinel 0.541ct Loose Stone
Sale price¥9,800
Tanzanian Kornerupine 0.616ct loose stone
Sale price¥49,800
Unheated Color Change Blue Sapphire 1.450ct Loose GIT
Sale price¥158,000
Brazilian alexandrite 0.082ct loose
Sale price¥12,800
Brazilian Dumortierite in Quartz 0.482ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.652ct loose stone (faceted cut)
Sale price¥9,800
Madagascar Blue Sapphire 0.448ct Loose
Sale price¥12,800
Zimbabwe bicolor euclase 0.110ct loose stone
Sale price¥49,800
Brazilian pyrope almandine garnet 0.925ct loose stone
Sale price¥9,800
Brazilian Aquamarine 0.578ct Loose Stone
Sale price¥12,800
Turkish pink diaspore 0.194ct loose stone
Sale price¥9,800
Turkish pink diaspore 0.171ct loose stone
Sale price¥8,800
Spanish Andalusite 0.478ct loose stone
Sale price¥6,980
Spanish Andalusite 0.394ct loose stone
Sale price¥8,800
Tanzanian Rhodolite Garnet 0.627ct Loose Stone
Sale price¥8,800
Afghanite from Afghanistan 0.193ct loose stone
Sale price¥39,800
Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.